Based on frequency of orgasm, the peak of sexual activity occurs
a. at age 18 for males and a little later for females.
b. after age 40 for males and females.
c. between the ages of 25 and 30 in males and in the mid-30s for women.
d. between 16 and 18 years for both males and females.
A
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a. Oxytocin b. Serotonin c. Gamma Aminobutyric Acid d. Opioid
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a. sadness or depression b. anxiety c. a feeling of numbness, or "nothingness" d. a feeling of aggressiveness
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